asDoubleOrNull function

double? asDoubleOrNull(
  1. Map<String, dynamic>? json,
  2. String key
)

Convert any map value with key to double or null safely.

Implementation

double? asDoubleOrNull(Map<String, dynamic>? json, String key) {
  if (json == null || !json.containsKey(key)) return null;
  return toDoubleOrNull(json[key]);
}